JPH0584675A - Electrically driven stapler - Google Patents

Abstract

PURPOSE:To staple paper with light force by vertically interlocking a needle case part and a hammer, pressing a press bar by a coil spring, and driving a staple needle by the hammer while retaining staple paper. CONSTITUTION:A stapler provides a hammer 9 for driving a staple needle and a paper retaining part 8 for retaining a peripheral side of staple paper associated with this hammer 9. Further, a paper retainer 8, when it is retained by energizing force of a coil spring 11 provided in a paper retaining part 8, is energized in a direction of retaining the paper retainer 8. In this way, stapling ability of an electrically driven stapler with a battery 26 serving as the power supply is increased, and the staple paper can be surely stapled by the paper retainer 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric stapler which is driven by a battery and electronically controlled to drive a binding needle into a sheet to be bound using a motor as a driving source.

[0002]

2. Description of the Related Art Conventionally, in a battery-operated electric stapler, in order to reduce the load, only the binding needle is moved downward (downward),
The staples were bent and the binding paper was bound.

[0003]

However, since the binding needle itself penetrates the paper for binding and binds the sheets together, the number of sheets to be bound is limited, and when trying to bind as many sheets as possible, the paper pressing portion Since the staples were bent, the staples were bent and floated, and the paper could not be completely bound.

[0004]

In order to solve this problem, the present invention comprises a hammer for driving a binding needle and a paper pressing portion for pressing the periphery of the binding paper in cooperation with the hammer to reduce the binding force. Further, the coil spring provided in the paper pressing portion is configured such that its urging force works in the direction of pressing the paper pressing when pressing the paper pressing.

[0005]

When the paper pressing portion having the coil spring is provided as described above, the binding capability of the electric stapler using the battery as a power source is increased, and the binding paper can be surely bound by the paper pressing.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 (represented by a broken line) is a motor, which reaches a final stage gear 2 by a gear train directly connected thereto, and a pin 3 is provided with a ring 3'on a side surface of the gear 2 The ring 3'is fitted on a lever 4 having an elongated hole. Reference numeral 5 denotes a fulcrum. When the gear 2 rotates, the fulcrum 5 pushes the push rod 7 with the shaft 6 provided at the other end through the fulcrum 5 by the pin 3 and causes the paper retainer 8 and the hammer 9 to descend. A push rod is attached to the hammer 9 with a pin 6'and a spring 11, and the push rod has a spring 11 having a stronger spring pressure than the spring 11 'below the needle case as the hammer descends.
Is pushed downward by the and the paper holder 8 and the staple case 2 are moved downward. Reference numeral 10 is a stopper, and a bending needle 10a is inserted into the stopper 10 to bend it.
Is located. Reference numeral 11 denotes a coil spring which simultaneously moves the hammer 9 downwardly and causes the paper retainer 8 to work in the pushing direction via the push rod 7. 12 is a needle case Sotowak 13
Store the binding staple between the staple case and the case. Reference numeral 14 denotes a fulcrum of the needle case sotaku 12, which moves up and down with the fulcrum 14 as a base point. A stopper pin 15 pushes out the needle case 13 held upward by a spring 28 to take out the binding needle and insert it. Reference numeral 16 is a push rod that pushes the stopper pin to move the push pin to push the needle case 13 forward. Further, since the A'dimension of the needle case sotaku 12 and the B'dimension of the needle case 13 are pulled by the A surface and the B surface in the D direction of the needle case 13, respectively, the hammer 9 is abutted. The size enough to fit in is ensured. B'-A '= tt: Hammer plate thickness. Reference numeral 17 denotes a switch lever, and when the switch lever 17 is pushed inward, a plate 18 that accommodates electronic parts is provided inside in conjunction with a micro switch (not shown). Reference numeral 19 is a cover, 20 is a bottom plate, 21 is a battery lid, 22 is an intermediate gear, 23, 24 and 25 are battery leads, 26 is a battery, and 27 is a gear chassis.

Next, the operation will be described. When the binding paper is pressed against the switch lever 17, the motor 1 rotates,
The lever 4 is driven by the pin 3 of the final stage gear 2 through the gear train, and the shaft 6 provided at the other end pushes the push rod 7 with the fulcrum 5 as the shaft, and the paper presser 8 is moved downward to press the bound paper. At the same time, lower the hammer 9 and pull the needle case 12
And push the binding needle stored between the staple case 13 and
The binding needle penetrates through the binding paper, the binding needle is bent at the bending portion of the stopper plate 10, the binding of the binding paper is completed, and the pin 3 of the lever 4 is lowered by the rotation of the gear 2 at the final stage, and the fulcrum 5 is used. At the same time as the shaft 6 provided at the other end moves up to raise the hammer, at the same time the needle case and the paper retainer, which lift the push rod up to the top dead center by the pin 6 ', return to the original position by the spring 28. Raise the paper retainer 8 and the hammer 9,
At that position, the switch is turned off by a micro switch (not shown), and the rotation of the motor 1 stops.

[0008]

As described above, according to the present invention, in a motor-driven electric stapler using a battery as a power source, a needle case portion and a hammer are interlocked vertically, and a push rod is pressed by a coil spring to bind paper. The paper can be bound with a hammer with a slight force while pressing, and even if the number of sheets to be bound changes, the staple can be held securely to ensure the binding of the paper, and the spring can be linked with the operation of the hammer. Since it is operated by, the power loss is small, and it is possible to use a small motor, and it is possible to make it inexpensive and compact. Furthermore, the size of the gap into which the hammer of the staple case and the staple case is inserted can be easily adjusted, and an electric stapler that is easy to assemble and accurate is supplied.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electric stapler according to an embodiment of the present invention.

FIG. 2 is a top view of the example stapler with a cover removed.

FIG. 3 (a) is a top view of the needle case sotowak of the present invention (b) is a front view of the needle case sotowak

FIG. 4A is a top view of the needle case, and FIG. 4B is a front view of the needle case.

FIG. 5 (a) Assembly view of the needle case and needle case sotowak (b) Partial top view

6A is a perspective view of the cover, FIG. 6B is a perspective view of the inside, and FIG. 6C is a perspective view of the bottom plate. FIG. 6D is a perspective view of the push rod.

FIG. 7 is a perspective view of a hammer

[Explanation of symbols]

 1 motor 2 final stage gear 3 pin 4 lever 5 fulcrum 6 shaft 7 provided at the other end 7 push rod 8 paper retainer 9 hammer 10 stopper plate 10a bent portion 11 coil spring 12 needle case sotowak 13 needle case 14 needle case sowaku fulcrum 15 Stop pin 16 Push rod 17 Switch lever 18 Plate for housing electronic parts 19 Cover 20 Bottom plate 21 Battery lid 22 Intermediate gear 23, 24, 25 Battery lead 26 Battery 27 Gear chassis

Claims (4)

[Claims] 1. A motor, a gear train driven by the motor, a pin provided on a side surface of a final stage gear of the gear train, and a lever having an elongated hole into which the pin portion is fitted.
A fulcrum shaft is provided on the lever, and rotation of the gear causes a pin provided on the side surface of the gear at the final stage to move up and down, and a hammer that drives a binding needle by a shaft provided at the other end of the fulcrum shaft is interlocked with the hammer. An electric stapler including a paper pressing unit that presses the periphery of the binding paper, and a control unit configured by an electronic circuit. 2. The motor is repeatedly driven by applying a binding sheet to the switch lever to move up and down once to stop, and then applying a binding sheet to the switch lever to move up and down again once. The electric stapler according to Item 1. 3. A gap for driving a binding needle is provided between the needle case and the needle case frame, and an appropriate binding needle driving space is secured by dimensional control at two different positions A'and B '.
The described electric stapler. 4. The electric stapler according to claim 1, wherein the paper pressing portion is provided with a coil spring, and the urging force of the spring is applied along the pressing direction when pressing the paper pressing portion itself.